The TWIN AIR Radiator Sleeve is crafted from a nylon-coated fiberglass material. This design helps prevent dirt, sand, and mud from infiltrating the radiator, thus protecting it from overheating. The sleeves are easily slipped over the radiator fins (which need to be removed) and secured firmly with elastic bands. The TWIN AIR Radiator Sleeves are available for many common motorcycle models, including those from KTM, HUSQVARNA, GASGAS, KAWASAKI, HONDA, YAMAHA, SUZUKI, and more. The package includes a pair of sleeves (left and right).